COATING SYSTEM AND COATING METHOD
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United States of America Patent
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app pub date -
Dec 16, 2015
filing date -
Dec 17, 2014
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Abstract
A coating system (1) is provided comprising a coating chamber (20) having arranged therein a coating apparatus (10) for providing a substrate (S) with an organic coating layer. The coating apparatus (10) comprises a coating device (12) for depositing a solvent free, curable liquid organic precursor for said organic coating layer and a curing unit (14) for curing the liquid organic precursor deposited on said substrate (S) by supplying energy to said liquid organic precursor. The coating system further comprises a vacuum pump (30) that, while coating, maintains a pressure inside said coating chamber below 1 mbar. A supply facility (152, 152′) for controllably supplies the curable liquid organic precursor from the reservoir to the coating device (12), The supply facility (152, 52′) has an input (1510) for receiving curable liquid organic precursor from the reservoir. A position of a bottom (150B) of the reservoir is arranged at a height (H1) above the input (1510). The coating system has a first operational mode wherein curable liquid organic precursor to be supplied to the coating apparatus is exposed to a vacuum having a pressure with a first pressure value that is equal to or lower than the chamber pressure value, and has a second operational mode following the first operational mode, wherein the supply facility (152, 152′) supplies the curable liquid organic precursor to the coating device (12).
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